NorthSec
The Montreal NorthSec 2025 edition whose public badge repository documents an ESP32-C3 electronic badge with RGB LEDs, buttons, IR pairing, dual SAO connectors, USB-C/AAA power, and PlatformIO firmware workflows.
Bonsecours Market, Montreal · Canada · 2025
NorthSec 2025's official badge repository documents an ESP32-C3-WROOM-02-N4 badge with eighteen NeoPixel RGB LEDs, five buttons, an IR pairing connector, two SAO v1.69bis connectors, USB-C or AAA battery power, and separate conference/CTF firmware builds.
Lifecycle
The repository documents separate PlatformIO build/upload environments for conference and CTF firmware on top of Espressif IDF.
Jean Privat's 2025 writeup documents USB-C/esptool firmware dumping, ESP32-C3 detection, partition extraction, factory-app identification, firmware strings for badge-network and persistence components, and attempts to patch the original firmware.
The README documents USB serial monitoring at 115200 baud plus reset-through-DTR guidance for firmware development and debugging.
The README documents an ESP32-C3-WROOM-02-N4 badge core with eighteen NeoPixel RGB LEDs and five attendee-facing buttons.
The badge exposes two Shitty Add-On V1.69bis connectors and an IR pairing connector, giving attendees both add-on and badge-to-badge interaction surfaces.
The 2025 soldering-village writeup documents an add-on challenge with eight LEDs, polarity/defect debugging, VCC and pin behavior, SAO table context, scrambled code recovery, and final flag submission.
Operational history
The catalogue uses them to enrich firmware and challenge behavior while keeping authoritative hardware-source claims tied to the official NorthSec repository.
The catalogue records verified hardware and firmware surfaces while leaving deeper NorthSec 2025 artifact archaeology for later work.
The record has a rights-cleared visual without implying that the image is conference-floor photography.
